/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.tomcat.util.descriptor;

import org.apache.juli.logging.Log;
import org.apache.tomcat.util.res.StringManager;
import org.xml.sax.ErrorHandler;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;

import java.util.ArrayList;
import java.util.List;

public class XmlErrorHandler implements ErrorHandler {

	private static final StringManager sm =
			StringManager.getManager(Constants.PACKAGE_NAME);

	private final List<SAXParseException> errors = new ArrayList<SAXParseException>();

	private final List<SAXParseException> warnings = new ArrayList<SAXParseException>();

	@Override
	public void error(SAXParseException exception) throws SAXException {
		// Collect non-fatal errors
		errors.add(exception);
	}

	@Override
	public void fatalError(SAXParseException exception) throws SAXException {
		// Re-throw fatal errors
		throw exception;
	}

	@Override
	public void warning(SAXParseException exception) throws SAXException {
		// Collect warnings
		warnings.add(exception);
	}

	public List<SAXParseException> getErrors() {
		// Internal use only - don't worry about immutability
		return errors;
	}

	public List<SAXParseException> getWarnings() {
		// Internal use only - don't worry about immutability
		return warnings;
	}

	public void logFindings(Log log, String source) {
		for (SAXParseException e : getWarnings()) {
			log.warn(sm.getString(
					"xmlErrorHandler.warning", e.getMessage(), source));
		}
		for (SAXParseException e : getErrors()) {
			log.warn(sm.getString(
					"xmlErrorHandler.error", e.getMessage(), source));
		}
	}
}
